Security protocols at Beijing Capital International Airport are being questioned after a passenger was able to bypass all security checks and board a flight without a ticket on Sunday.

　　上周日，北京首都国际机场某无票乘客成功避过安全检查登机，机场安全条例遭到质疑。

　　An airport representative confirmed to the Beijing Youth Report that a parent smuggled his or her child past security checkpoints and check-in registration yesterday, and was only discovered by the flight crew in the passenger cabin just before takeoff.

　　机场负责人告诉《北京青年报》，昨天是一位家长私自帮小孩避过安全检查和登机检查，飞机起飞前，空乘发现了这一情况。

　　They did not buy a ticket for their 4 year-old daughter because they thought "travel is free for children under 1.2 meters in height."

　　他们没有为自家4岁的女儿买票，因为他们以为“1米2以下的儿童是免票的”。

　　The extra passenger prompted the airport to undergo extra procedures, forcing all passengers to disembark and undergo security clearance for a second time while the plane underwent another security check.

　　因为这位无票乘客，机场开展了诸多检查，所有乘客下机并接受二次安全检查，也对飞机进行了二次排查。

　　The incident was first publicized by a Weibo user on Sunday who said a family of four had only purchased seats for three. Other accounts described the family as consisting of five members.

　　周日，一位微博网友在微博中最先发声指责这家人，说他们四口之家却只买三张票，其他说法称该家庭共有五口人。

　　Chinese netizens reacted to the story by criticizing airport for allowing this security breach to occur. "Just how was this person able to bypass both security and the check-in?" asked one person while another guessed, "Could it be that he is invisible?"

　　中国网民纷纷指责机场的安全漏洞。有人疑惑：“这人是怎么逃过安全检查和登机检查两道关卡的?”有人猜测：“可能他是隐形的?”